Cooling device, battery assembly and electric equipment

Abstract

The utility model provides a cooling device, an electric assembly and electric equipment. A flow guide cavity and a containing cavity are defined in the cooling device, the containing cavity is not communicated with the flow guide cavity, the flow guide cavity is used for guiding a cooling agent, and the containing cavity is used for containing substances sprayed out of the battery through the explosion-proof valve. According to the cooling device in the scheme, the flow guide cavity is arranged, so that the coolant can flow in the flow guide cavity, the heat dissipation efficiency of the battery assembly is improved, the temperature of the battery assembly is reduced, and the possibility of thermal runaway is reduced. Through the arrangement of the accommodating cavity, when thermal runaway of the battery occurs, generated pressure or leaked electrolyte is released into the accommodating cavity in time. According to the utility model, the diversion cavity and the accommodating cavity are integrated, so that the stability and the safety of the battery assembly are improved, and the service life of the battery assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and more specifically to a cooling device, a battery assembly and electrical equipment. Background Art

[0002] When a battery pack experiences thermal runaway, it may cause an increase in internal pressure in the battery, leading to electrolyte leakage. The internal structure of a battery pack is usually designed to be compact, and the electrolyte leaking from a single battery can easily contaminate other batteries or other components in the battery pack. Utility Model Content

[0003] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0004] In order to at least partially solve the above problems, the first aspect of the present invention provides a cooling device for a battery, wherein a guide cavity and a receiving cavity are defined in the cooling device, and the receiving cavity is not connected to the guide cavity, wherein:

[0005] The guide cavity is used to guide the coolant, and the receiving cavity is used to receive the substances sprayed out of the battery through the explosion-proof valve.

[0006] According to the cooling device of the first aspect of the utility model, through the setting of the guide cavity, the coolant can flow in the guide cavity, improve the heat dissipation efficiency of the battery assembly, help reduce the temperature of the battery pack, and reduce the possibility of thermal runaway. Through the setting of the accommodating cavity, when the battery thermal runaway occurs, the generated pressure or leaked electrolyte is released into the accommodating cavity in time. In the utility model, the guide cavity and the accommodating cavity are integrated, which not only improves the stability and safety of the battery assembly, but also helps to extend the service life of the battery assembly.

[0007] Optionally, the cooling device comprises:

[0008] A substrate, the substrate comprising a first substrate and a second substrate arranged opposite to each other in a thickness direction of the cooling device; and

[0009] A flow channel plate is arranged between the first substrate and the second substrate, and the flow channel plate is provided with a guide groove and a receiving groove. The guide groove and the first substrate define the guide cavity, and the receiving groove and the second substrate define the receiving cavity.

[0010] Optionally, the flow channel plate has a first side and a second side arranged opposite to each other, the first side faces the first substrate, and the second side faces the second substrate, wherein the guide groove is recessed from the first side along the thickness direction of the flow channel plate, and the accommodating groove is recessed from the second side along the thickness direction of the flow channel plate.

[0011] Optionally, the first substrate is provided with a first through hole penetrating along the thickness direction thereof;

[0012] The flow channel plate is provided with a second through hole extending through the flow channel plate in the thickness direction thereof, the second through hole being connected to the accommodating cavity and not connected to the flow guide cavity;

[0013] The first through hole is communicated with the second through hole, so that the accommodating cavity is communicated with the outside through the first through hole.

[0014] Optionally, an insulating layer is further included, and the insulating layer is arranged on a side of the first substrate away from the second substrate.

[0015] Optionally, the guide groove comprises:

[0016] a plurality of first guide grooves;

[0017] and a second guide groove, wherein the second guide groove is connected to the adjacent first guide groove.

[0018] Optionally, the accommodating cavity corresponds one-to-one to the first guide groove.

[0019] Optionally, a plurality of sub-flow channel portions are arranged in the first guide groove, and adjacent sub-flow channel portions are spaced apart.

[0020] Optionally, the cross-section of the outer contour of the first guide groove is a regular polygon or a circle; and / or

[0021] The shape of the first guide groove is any one of a bionic spider web shape, a honeycomb shape, and a leaf vein shape.

[0022] Optionally, multiple first guide grooves are arranged at intervals along a first direction, and the second guide grooves connected to the first guide grooves are shaped as a group of guide channels, and multiple groups of guide channels are arranged at intervals along a second direction, the first direction intersects with the second direction, and the first direction and the second direction are both perpendicular to the thickness direction of the cooling device.

[0023] Optionally, each group of the guide channels has an inlet and an outlet, and the flow channel plate further includes an inlet pipeline and an outlet pipeline, the inlet pipeline is connected to the inlet, and the outlet pipeline is connected to the outlet.

[0024] Optionally, the inlets and the outlets of the same group of the guide channels are arranged at intervals along the first direction.

[0025] Optionally, the outlet pipeline includes a first outlet pipeline and a second outlet pipeline, and the first outlet pipeline and the second outlet pipeline extend from the outlet to the inlet along the periphery of the guide channel.

[0026] A second aspect of the utility model provides a battery assembly, comprising a battery and the above-mentioned cooling device.

[0027] The battery assembly according to the second aspect of the utility model has high heat dissipation efficiency and strong safety. When the battery has abnormal conditions such as thermal runaway, the accommodating cavity designed in the cooling device can isolate and release the generated pressure or leaked electrolyte in time.

[0028] Optionally, the cooling device has a through hole, and the through hole is connected to the accommodating cavity;

[0029] The battery comprises an explosion-proof valve, the cooling device is arranged towards the battery, and the explosion-proof valve and the through holes are arranged in a one-to-one correspondence.

[0030] Optionally, a thermally conductive adhesive is provided between the battery and the cooling device;

[0031] Along the flow direction of the coolant in the flow guiding cavity, the thermal conductivity of the thermal conductive adhesive located upstream is smaller than the thermal conductivity of the thermal conductive adhesive located downstream.

[0032] A third aspect of the utility model provides an electrical device, comprising the above-mentioned battery assembly.

[0033] According to the electrical equipment of the third aspect of the utility model, the user experience of the electrical equipment is optimized as a whole through designs such as improving equipment performance, extending life, and enhancing stability and safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0035] Figure 1 It is a three-dimensional exploded schematic diagram of a cooling device according to a preferred embodiment of the utility model;

[0036] Figure 2 for Figure 1 An enlarged schematic diagram of part A in FIG.

[0037] Figure 3 for Figure 2 Enlarged schematic diagram of part B in

[0038] Figure 4A schematic front view of a cooling device according to a preferred embodiment of the present invention;

[0039] Figure 5 for Figure 4 An enlarged schematic diagram of part C in FIG.

[0040] Figure 6 A schematic diagram of a pipeline and an outlet pipeline of a preferred embodiment of the utility model;

[0041] Figure 7 This is a schematic diagram of a pipeline and an outlet pipeline of another preferred embodiment of the utility model;

[0042] Figure 8 A schematic front view of a battery assembly according to a preferred embodiment of the present invention;

[0043] Fig. 9 A schematic side view of a battery assembly according to a preferred embodiment of the present invention; and

[0044] Fig.10 Schematic diagram of the connection between the battery and the cooling device.

[0045] Description of Reference Numerals

[0046] 11: First substrate

[0047] 111: First through hole

[0048] 12: Second substrate

[0049] 20: Runner plate

[0050] 201: First side

[0051] 202: Second side

[0052] 21: Diversion groove

[0053] 211: First diversion channel

[0054] 2111: Runner

[0055] 212: Second diversion channel

[0056] 213: Import

[0057] 214: Exit

[0058] 22: Receiving slot

[0059] 221: Second through hole

[0060] 23: Sub-flow channel

[0061] 24: Inlet pipeline

[0062] 25: Export pipeline

[0063] 251: First outlet pipeline

[0064] 252: Second outlet pipeline

[0065] 30: Insulation layer

[0066] 31: The third through hole

[0067] 40: Connector

[0068] 50: Battery

[0069] 51: Explosion-proof valve

[0070] DW: thickness direction

[0071] D1: First direction

[0072] D2: Second direction DETAILED DESCRIPTION

[0073] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0074] In this document, ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0075] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0076] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0077] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0078] Now, exemplary embodiments according to the present utility model will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present utility model thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0079] like Figure 1-Figure 10 As shown, the utility model provides a cooling device. The cooling device is used for a battery assembly. A guide chamber and a receiving chamber are defined in the cooling device, and the receiving chamber is not connected to the guide chamber, wherein the guide chamber is used to guide the coolant, and the receiving chamber is used to receive the substance ejected from the battery through the explosion-proof valve. In the utility model, by setting the guide chamber, the coolant can flow in the guide chamber, thereby improving the heat dissipation efficiency of the battery assembly, helping to reduce the temperature of the battery assembly, and reducing the possibility of thermal runaway. By setting the receiving chamber, when thermal runaway occurs in the battery, the generated pressure or the leaked electrolyte and other substances are released into the receiving chamber in time. In the utility model, the guide chamber and the receiving chamber are integrated, which not only improves the stability and safety of the battery assembly, but also helps to extend the service life of the battery assembly.

[0080] In some embodiments of the utility model, the cooling device is provided with a through hole, which is communicated with the accommodating cavity and is arranged corresponding to the explosion-proof valve of the battery, so that the material sprayed from the battery through the explosion-proof valve can be accommodated in the accommodating cavity through the through hole.

[0081] In some embodiments of the utility model, the cooling device includes a substrate and a flow channel plate 20. The substrate includes a first substrate 11 and a second substrate 12 that are arranged opposite to each other along the thickness direction of the cooling device. The first substrate 11 and the second substrate 12 are arranged at intervals. The flow channel plate 20 is arranged between the first substrate 11 and the second substrate 12, and the flow channel plate 20 is provided with a guide groove 21 and a receiving groove 22. A guide cavity is defined between the guide groove 21 and the first substrate 11. A receiving cavity is defined between the receiving groove 22 and the second substrate 12. In this solution, the guide groove 21 and the receiving groove 22 are provided on the flow channel plate 20, and the flow channel plate 20 can be combined with the first substrate 11 and the second substrate 12 to form a guide cavity and a receiving cavity, and the preparation process and assembly steps are relatively simple.

[0082] In some other embodiments of the present invention, a flow guiding cavity is defined between the flow guiding groove 21 and the second substrate 12. A receiving cavity is defined between the receiving groove 22 and the first substrate 11.

[0083] In some embodiments of the utility model, the first substrate 11 is provided with a first through hole 111 that passes through along its thickness direction DW. The flow channel plate 20 is provided with a second through hole 221 that passes through along its thickness direction DW. The second through hole 221 is connected to the accommodating chamber and is not connected to the guide chamber. Among them, the first through hole 111 and the second through hole 221 are through holes provided on the cooling device. The first through hole 111 is connected to the second through hole 221 so that the accommodating chamber is connected to the outside world through the first through hole 111. Optionally, the flow channel plate 20 is sealed and fitted with the first substrate 11 and the second substrate 12 respectively. The first through hole 111 and the second through hole 221 are arranged relative to each other, so that the accommodating chamber can exchange gas or liquid with the external environment, and when the battery has thermal runaway, the generated pressure or leaked electrolyte is released into the accommodating chamber in time, thereby improving the safety and stability of the battery assembly. In addition, the above-mentioned arrangement can also ensure that the guide chamber and the battery are in contact with each other only based on the first substrate, so as to ensure the cooling effect of the cooling device on the battery.

[0084] In some other embodiments of the utility model, the second substrate is arranged in a direction close to the battery relative to the first substrate, and the first substrate is arranged in a direction away from the battery relative to the second substrate. The second substrate is provided with a through hole extending through the thickness direction thereof. The through hole is connected to the accommodating cavity and is not connected to the diversion cavity.

[0085] In some other embodiments of the utility model, the substrate is set as one. The flow channel plate 20 and the substrate together form a guide cavity and a receiving cavity that are not connected to each other. Specifically, the surface of the flow channel plate 20 facing the substrate is recessed toward the side away from the substrate to form a guide groove 21 and a receiving groove 22, and the substrate closes the guide groove 21 and the receiving groove 22 to form a guide cavity and a receiving cavity. Among them, a through hole is provided on the substrate to connect the receiving cavity with the battery explosion-proof valve.

[0086] Optionally, the substrate and the flow channel plate 20 are integrally formed. As can be seen from the above, the substrate includes a first substrate 11 and a second substrate. Alternatively, the substrate is provided as one. Thus, the setting of the cooling device can be simplified.

[0087] The following takes the example of defining a flow guiding cavity between the flow guiding groove 21 and the first substrate 11 and defining an accommodation cavity between the accommodation groove 22 and the second substrate 12 to introduce a specific implementation of the cooling device.

[0088] In some embodiments of the present invention, Fig.10As shown, the flow channel plate 20 has a first side 201 and a second side 202 that are arranged opposite to each other, and the guide groove 21 is recessed from the first side 201 along the thickness direction DW of the flow channel plate 20. That is, the guide groove 21 is arranged toward the first substrate 11. The guide groove 21 and the first substrate 11 are enclosed to form a guide cavity. The receiving groove 22 is recessed from the second side 202 along the thickness direction DW of the flow channel plate 20. That is, the receiving groove 22 is arranged toward the second substrate 12. The receiving groove 22 and the second substrate 12 are enclosed to form a receiving cavity.

[0089] In this embodiment, two sides of the flow channel plate 20 are respectively welded to the first substrate 11 and the second substrate 12. Optionally, the flow channel plate 20 is respectively brazed to the first substrate 11 and the second substrate 12.

[0090] In the present invention, a portion of the first side 201 of the flow channel plate 20 abuts against the first substrate 11, and another portion of the first side 201 of the flow channel plate 20 is spaced from the first substrate 11. A portion of the second side 202 of the flow channel plate 20 abuts against the second substrate 12, and another portion of the second side 202 of the flow channel plate 20 is spaced from the second substrate 12. Thus, both sides of the flow channel plate 20 are concave-convex structures. While providing the guide groove 21, a receiving groove 22 for receiving the leaked electrolyte is provided, and plays a role similar to a reinforcing rib, increasing the rigidity and stability of the flow channel plate 20.

[0091] The cooling device can be used for a battery assembly. Optionally, the battery assembly is a battery pack. The cooling device can serve as a sealing cover for the battery pack and also as a floor of the entire vehicle, capable of carrying heavy objects while withstanding passengers stepping on them. Its flat structure on both sides can ensure the sealing of the battery pack and the entire vehicle.

[0092] In some embodiments of the utility model, the guide groove 21 includes a plurality of first guide grooves 211 and a second guide groove 212. The plurality of first guide grooves 211 are configured as spaced grid grooves. In some embodiments of the utility model, the first guide grooves 211 correspond to the batteries 50 one by one. The first guide grooves 211 of the grid grooves can concentrate the liquid coolant around the battery 50, achieve more effective heat exchange, and improve the heat dissipation efficiency. The second guide grooves 212 are connected to the adjacent first guide grooves 211. The second guide grooves 212 are connected to the adjacent first guide grooves 211 to ensure that the liquid coolant flows evenly in different parts, avoid local overheating or overcooling, and ensure the uniformity of the heat dissipation effect. Optionally, the area of ​​the first guide groove 211 is larger than that of the second guide groove 212. Through this embodiment, it is possible to achieve the same contact area between each battery and the first guide groove 211, thereby ensuring the same heat exchange capacity, reducing the temperature difference of each battery cell, and improving the life of the battery pack.

[0093] In some embodiments of the present invention, the accommodating cavity corresponds to the first flow guiding groove 211. Optionally, the central axis of each first flow guiding groove 211 coincides with the central axis of the battery 50 corresponding thereto.

[0094] In some embodiments of the utility model, a plurality of sub-channel portions 23 are provided in the first guide groove 211, and adjacent sub-channel portions 23 are spaced apart to separate the first guide groove 211 into meshed channels 2111. The meshed channel 2111 structure can increase the turbulence effect of the liquid coolant during the flow process, so that the liquid can more fully contact the heat dissipation surface, thereby improving the heat exchange efficiency.

[0095] In some embodiments of the utility model, the projection of the outer contour of the first guide groove 211 on the plane where the first direction D1 and the second direction D2 are located is a regular polygon or a circle. Optionally, the first guide groove 211 is adapted to the area of ​​the battery 50. By setting the first guide groove 211 to a regular polygon or a circle, it can be ensured that the cooling device performs effective and stable heat dissipation treatment on each battery 50 during operation, thereby improving the stability and reliability of the system. Optionally, the first guide groove 211 is set to a regular hexagon, a regular octagon or a circle.

[0096] In the present invention, the first direction D1 intersects with the second direction D2. Both the first direction D1 and the second direction D2 are perpendicular to the thickness direction of the cooling device.

[0097] In some embodiments of the present invention, the shape of the flow channel 2111 is any one of a bionic spider web, a honeycomb, and a leaf vein. Figure 4-Figure 7 As shown, the shape of the flow channel 2111 is a bionic spider web. The spider web-shaped flow channel 2111 can ensure that the contact area between each battery and the cold plate is the same, thereby ensuring that the heat exchange capacity of each battery 50 is the same, improving the temperature uniformity between the batteries 50, reducing the temperature difference of the whole pack, and increasing the life of the battery pack.

[0098] In some embodiments of the present invention, a plurality of first guide grooves 211 are arranged at intervals along the first direction D1, and the second guide grooves 212 connected to the first guide grooves 211 are formed into a group of guide channels, and the plurality of groups of guide channels are arranged at intervals along the second direction D2. That is, the first guide grooves 211 are arranged in rows and staggered, and the staggered arrangement can reduce the intervals and make more effective use of space.

[0099] In some embodiments of the present invention, each group of flow guide channels has an inlet 213 and an outlet 214. The flow channel plate 20 also includes an inlet pipeline 24 and an outlet pipeline 25, wherein the inlet pipeline 24 is connected to the inlet 213, and the outlet pipeline 25 is connected to the outlet 214. Figure 6-Figure 7As shown, the inlet 213 of each group of flow-guiding channels can be converged to the inlet pipeline 24, and the outlet 214 of each group of flow-guiding channels can be converged to the outlet pipeline 25. Optionally, the inlet pipeline 24 and the outlet pipeline 25 are connected to the joint 40.

[0100] In some embodiments of the utility model, the inlet 213 and the outlet 214 of the same group of guide channels are arranged at intervals along the first direction D1. That is, a plurality of side-by-side guide channels are arranged side by side along the second direction D2. The direction of the inlet 213 of each group of guide channels is consistent with the direction of the outlet 214, so the design and layout of the guide channels can be simplified, the system complexity can be reduced, the manufacturing cost can be reduced, and the installation and maintenance of the system can be facilitated.

[0101] In some embodiments of the present invention, Figure 7 As shown, the outlet pipeline 25 includes a first outlet pipeline 251 and a second outlet pipeline 252, and the first outlet pipeline 251 and the second outlet pipeline 252 extend from the outlet 214 to the inlet 213 along the periphery of the guide channel. As shown in the figure, along the first direction D1, the first outlet pipeline 251 and the second outlet pipeline 252 extend to one side of the inlet 213. The second direction D2 has two opposite directions, and along the second direction D2, the first outlet pipeline 251 and the second outlet pipeline 252 extend respectively along the two opposite directions of the second direction D2.

[0102] Through the above embodiments, the guide channels can be arranged in different ways according to actual needs.

[0103] In some embodiments of the present invention, Figure 1 As shown, an insulating layer 30 is also included, and the insulating layer 30 is arranged on the side of the first substrate 11 away from the second substrate 12. The insulating layer 30 can effectively isolate the direct contact between the battery 50 and the cooling device, reduce the safety hazards caused by short circuit or leakage, and improve the safety of the system.

[0104] On the basis of the above embodiment, the insulating layer 30 is provided with a third through hole 31. The third through hole 31 is connected to the accommodating cavity. Optionally, the third through holes 31 are arranged in an array. The third through holes 31 correspond to the accommodating cavities one by one. Optionally, the insulating layer 30 is also provided with a through hole for connecting the joint 40.

[0105] The utility model also provides a battery assembly, which includes a battery 50 and the above-mentioned cooling device.

[0106] Alternatively, if Figure 8-Figure 10 As shown, the battery 50 is a cylindrical battery. The battery 50 is provided with a pole and an explosion-proof valve 51 in an axial direction thereof. The explosion-proof valve 51 is provided on a side facing the cooling device. The pole is provided on a side away from the cooling device.

[0107] Optionally, in an embodiment not shown in the figure, the battery 50 is a square shell battery. The pole and the explosion-proof valve of the square shell battery are arranged on different sides. The explosion-proof valve is arranged on the side facing the cooling device.

[0108] Optionally, in an embodiment not shown in the figure, the battery 50 is a square shell battery. The pole and the explosion-proof valve of the square shell battery are arranged on the same side. The explosion-proof valve is arranged on the side facing the cooling device.

[0109] In the utility model, the accommodating chambers are arranged in an array.

[0110] In some embodiments of the utility model, the cooling device has a through hole, which is connected to the accommodating cavity, and the battery includes an explosion-proof valve, the cooling device is arranged toward the battery, and the through hole and the explosion-proof valve are arranged in a one-to-one correspondence. And the accommodating cavity corresponds to the explosion-proof valve 51 one-to-one, specifically, the first through hole 111 corresponds to the explosion-proof valve 51 one-to-one. By the one-to-one correspondence between the accommodating cavity and the explosion-proof valve 51 of the battery, when the battery has thermal runaway, the generated pressure or the leaked electrolyte can be released into the accommodating cavity in time, so that the leaked material is concentrated in a specific area, which is convenient for subsequent processing and maintenance.

[0111] In some embodiments of the present invention, a thermally conductive adhesive is provided between the battery 50 and the cooling device. The thermally conductive adhesive can effectively conduct heat while providing adhesion, thereby improving heat dissipation efficiency and allowing heat to be transferred from the battery to the cooling device more quickly.

[0112] In some embodiments of the utility model, the thermal conductivity of the thermally conductive glue located upstream is less than the thermal conductivity of the thermally conductive glue located downstream. Exemplarily, the flow channel is filled with thermally conductive glue with higher thermal conductivity in sequence along the flow direction. There are 8 cylindrical batteries along the flow direction. The thermal conductivity of the thermally conductive glue between the first three batteries 50 and the contact surface of the cooling device is 0.8W (m*k), the thermal conductivity of the thermally conductive glue between the 45th battery 50 and the contact surface of the cooling device is 1.0W (m*k), and the thermal conductivity of the thermally conductive glue between the 678th battery 50 and the contact surface of the cooling device is 1.2W (m*k), so that all battery cells have the same contact area with the flow guide cavity and the same cooling effect.

[0113] The utility model also provides an electrical device, including the above-mentioned battery assembly. The efficient heat dissipation and safety enhancement of the battery assembly can ensure that the battery operates within a stable temperature range, thereby improving the performance of the entire electrical device. By setting the accommodating cavity of the cooling device, potential safety risks can be effectively addressed, thereby protecting the electrical device and its users from potential hazards. Optionally, the electrical device is a vehicle or an energy storage cabinet. Of course, the battery assembly is not limited to vehicles or energy storage cabinets, and those skilled in the art can set it according to actual needs.

[0114] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article may indicate that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0115] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A cooling device for a battery, characterized in that: The cooling device defines a flow guiding cavity and a receiving cavity, and the receiving cavity is not connected to the flow guiding cavity, wherein: The guide cavity is used for guiding the coolant, and the containing cavity is used for containing the substances sprayed out of the battery through the explosion-proof valve.

2. The cooling device according to claim 1, characterized in that: The cooling device comprises: A substrate, the substrate comprising a first substrate and a second substrate arranged opposite to each other in a thickness direction of the cooling device; and A flow channel plate is arranged between the first substrate and the second substrate, and the flow channel plate is provided with a guide groove and a receiving groove. The guide groove and the first substrate define the guide cavity, and the receiving groove and the second substrate define the receiving cavity.

3. The cooling device according to claim 2, characterized in that: The flow channel plate has a first side and a second side arranged opposite to each other, the first side faces the first substrate, and the second side faces the second substrate, wherein the guide groove is recessed from the first side along the thickness direction of the flow channel plate, and the accommodating groove is recessed from the second side along the thickness direction of the flow channel plate.

4. The cooling device according to claim 2 or 3, characterized in that: The first substrate is provided with a first through hole penetrating along the thickness direction thereof; The flow channel plate is provided with a second through hole extending through the flow channel plate in the thickness direction thereof, the second through hole being connected to the accommodating cavity and not connected to the flow guide cavity; The first through hole is communicated with the second through hole, so that the accommodating cavity is communicated with the outside through the first through hole.

5. The cooling device according to claim 2, characterized in that: It also includes an insulating layer, which is arranged on a side of the first substrate away from the second substrate.

6. The cooling device according to claim 2 or 3, characterized in that: The guide groove comprises: A plurality of first guide grooves and second guide grooves, wherein the second guide grooves are connected to adjacent first guide grooves.

7. The cooling device according to claim 6, characterized in that: The accommodating cavity corresponds to the first guide groove one by one.

8. The cooling device according to claim 6, characterized in that: A plurality of sub-flow channel portions are arranged in the first guide groove, and adjacent sub-flow channel portions are spaced apart.

9. The cooling device according to claim 6, characterized in that: The cross section of the outer contour of the first guide groove is a regular polygon or a circle; and / or The shape of the first guide groove is any one of a bionic spider web shape, a honeycomb shape, and a leaf vein shape.

10. The cooling device according to claim 6, characterized in that: Multiple first guide grooves are arranged at intervals along a first direction, and the second guide grooves connected to the first guide grooves are shaped as a group of guide channels, and multiple groups of guide channels are arranged at intervals along a second direction. The first direction intersects with the second direction, and the first direction and the second direction are both perpendicular to the thickness direction of the cooling device.

11. The cooling device according to claim 10, characterized in that: Each group of the guide channels has an inlet and an outlet, and the flow channel plate further includes an inlet pipeline and an outlet pipeline, the inlet pipeline is connected to the inlet, and the outlet pipeline is connected to the outlet.

12. The cooling device according to claim 11, characterized in that The inlets and the outlets of the same group of the guide channels are arranged at intervals along the first direction.

13. The cooling device according to claim 12, characterized in that: The outlet pipeline includes a first outlet pipeline and a second outlet pipeline, and the first outlet pipeline and the second outlet pipeline extend from the outlet to the inlet along the periphery of the guide channel.

14. A battery assembly, characterized in that: The invention comprises a battery and a cooling device according to any one of claims 1 to 13.

15. The battery assembly according to claim 14, characterized in that: The cooling device has a through hole, and the through hole is connected to the accommodating cavity; The battery comprises an explosion-proof valve, the cooling device is arranged towards the battery, and the explosion-proof valve and the through holes are arranged in a one-to-one correspondence.

16. The battery assembly according to claim 15, characterized in that: A heat-conducting adhesive is provided between the battery and the cooling device; Along the flow direction of the coolant in the flow guiding cavity, the thermal conductivity of the thermal conductive adhesive located upstream is smaller than the thermal conductivity of the thermal conductive adhesive located downstream.

17. An electrical equipment, characterized in that: Comprising a battery assembly according to any one of claims 14-16.

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